I have just spent the last couple hours trying to get the clickable actions to work on my homebrew monster. It doesn't work. I can make a copy of a Knight for example, make no changes at all and save it. Non of the clickable actions will work. Can you not create homebrew monsters with clickable actions anymore? I see lots of them out there, but I can't make one.

The rollables only work in the encounter builder/tracker, nowhere else. If they aren’t working there then please copy/past the code into a post here and I’ll take a look for you.

I will give it a try, thanks.

It did work in the encounter builder. But when I use homebrew monsters created by other people, I can use them just like official monsters. Why is that?

What do you mean? Even the official monsters are only clickable in the encounter builder/tracker. Are you perchance using a browser extension such as Beyond20?